P0C02 is the general current code for drive motor B, the second electric machine, such as the second motor of a two-motor hybrid or the rear motor of an electric all-wheel-drive system. It applies to a current fault that is neither classed as low (P0C03) nor high (P0C04). No manufacturer documents this exact code publicly. CARB requires monitoring of electric motor performance. The documented relative is P0C04: GM checks the phase current of motor B against 600 to 725 A, and Stellantis lists P0C04 on the 2026 Wagoneer S and Cherokee with faulty three-phase cable joints. With P0C02 stored the controller usually cuts or limits the power of motor B. Inspect the phase cabling, the winding resistance and the inverter of motor B.
High severity. Can I keep driving?If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.
Symptoms
- Hybrid or electric drive warning lamp
- Reduced power or loss of all-wheel drive
- Limp mode
Most likely causes
- Loose, corroded or damaged three-phase connection of motor B
- Fault in the motor B inverter or its current measurement
- Damaged stator winding of drive motor B
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- It can trigger limp mode.
- It affects emissions.
What each character of P0C02 means
- P: Powertrain: engine and transmission
- 0: Generic code: same on every make
- C: Subsystem depends on the code range
- 02: Specific fault in that system
Frequently asked questions
Can I keep driving with code P0C02?
If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.
What causes code P0C02?
The most common causes are: loose, corroded or damaged three-phase connection of motor B; fault in the motor B inverter or its current measurement; damaged stator winding of drive motor B.
Related codes
- P0C03Drive Motor B Current Low
- P0C04Drive Motor B Current High
- P0BFFDrive Motor A Current
- P0C08Drive Motor B Phase U-V-W Circuit/Open
- P0BFEDrive Motor B Phase U-V-W Current Sensor Correlation
- P0BF1Drive Motor B Phase U Current Sensor Circuit
- P0BF5Drive Motor B Phase V Current Sensor Circuit
- P0BF9Drive Motor B Phase W Current Sensor Circuit
Sources
- law.cornell.edu: 13 CCR 1968.2
- gsi.ext.gm.com: 12OBDG06 Hybrid Diagnostics
- static.nhtsa.gov: MC 11029775 0001
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.